must have firefox extensions?

so... what do you think are the must have firefox extensions?

i currently use the following:

flashgot - ez mass downloading etc,
Image Zoom - zooms images...duh,
Linkification - converts text links to clickable links cause im a lazy bastard,
googlebar - googlebar,
NoScript - says no to javascript shit,
BugMeNot - one click login for websites,
Fasterfox - optimizes firefox for faster browsing,
adblock plus - removes useless ads,
videodownloader - lets you easily download vids on websites without having to browse the source,
Tab Mix Plus - better tabs + session manager incase firefox crashes,
pearl crescent page saver - saves whole website as image,
platypus - remove useless stuff from websites etc,
greasemonkey - userscript manager which allows customizing of websites and general browser behavior

anything else i NEED?

4chan 0.4.3.1
Adblock Filterset.G Updater 0.3.0.4
Adblock Plus 0.7.1
BBCodeXtra 0.2.5.5
Bookmark Backup 0.3.3
BugMeNot 1.3
CacheViewer 0.3
ChatZilla 0.9.74
ChromEdit 0.1.1.1
CuteMenus - Crystal SVG 1.2
Deepest Sender 0.7.7
Disable Targets For Downloads 1.0.1
Download Sort 2.5.4
DownThemAll! 0.9.9.6.1
Ext2Abc 0.5
Firefox Extension Backup Extension (FEBE) 3.0
Google Images Re-Linker 0.4
GoonMenu 0.6
Greasemonkey 0.6.4
ImageShack right-click 0.3.4
Launchy 4.2.0
Linkification 1.2.3
ListZilla 0.8
miniFoxFlat 0.3.4
MinimizeToTray 0.0.1.2006030906+
NextPlease 0.6.4
Nightly Tester Tools 1.0.4
Not4chan Extension 1.9
OpenDownload 0.2.3
Platypus 0.64
refspoof 0.7.0
ReloadEvery 1.5.1
Sage 1.3.6
Save Image in Folder 0.9.1
Scrollbar Anywhere 0.8
SearchPluginHacks 0.1.3
SearchWith 0.2
Show Failed URL 0.1.4
SomethingAwful Last Read Enhancement 1.15.1912
SpellBound Development 0.9.8.20060108
StumbleUpon 2.78
Tab Mix Plus 0.3.0.5
Talkback 1.5.0.4
Temporary Inbox 1.3
textareatools 2005.05.18
Unhide Passwords 1.1.2
UnPlug 1.4.0
View Source Chart 2.0.02
Web Developer 1.0.2
WebmailCompose 0.6.6
xMirror 0.2


only using 1 gig of memory when firefox is open